code: def test_class_getitem_patched(self):
      class C:
          def __init_subclass__(cls):
              def __class_getitem__(cls, item):
                  return f"{cls.__name__}[{item.__name__}]"
  
              cls.__class_getitem__ = classmethod(__class_getitem__)
  
      class D(C):
          ...
  
      self.assertEqual(D[int], "D[int]")
      self.assertEqual(D[D], "D[D]")
  
imports: import unittest
  from test import support
label_desc: Use image node_id 6 for calling the TestClassGetitem obj's underlying member method code with example usage: obj.test_class_getitem_patched() and returns: cls, str, item, str